Coupling for flexible hose



Dec: 19, v1933.

G. K. BEDUR COUPLING FOR FLEXIBLE HOSE Filed Oct. 5, 1952 jun/5 277272? 24' /0 520555 5.550125 7 :ZAY-

Patented Dec. 19, 1933 i UNITED STATES PATENT OFFICE COUPLING FOR FLEXIBLE HOSE George K. Bedur, Akron, Ohio, asslgnor to The B. F. Goodrich Company, New York, N. Y., a

corporation of New York Application October 5, 1932. Serial No. 636,270

' 2 Claims. (01. 285-71) This invention relates to couplings for flexible Where the ring 14 is of L-shape as shown in hose, and is especially useful in the coupling of Fig. 1, a filling 18 of fabric or other light material flexible hose of relatively large cross-section such may also be employed to fill the hollow section. as is used in pumping and dredging operations. The rubber wall 19 of the hose is preferably ex- I The principal objects of the invention are to tended around the end of the conduit and over 60 provide simplicity of construction, eflicient sealthe outer surface of the hose as a continuous iming of the joint, and security of fastening, and pervious layer which will protect the reinforceto provide a construction which will not interments and will prov de a u be sealing su fere with the flow of material through the conas at 20, o meet a djo n m mber. At the duit. sealing surface 20 the rubber may be of increased 65 Other objects will appear from the following thickness to provide an eflicient sealdescription and the accompanying drawings. The ring 12 is p v d wi adj ab e f sten- In the drawing: ing devices such as bolts 21 adapted to engage Fig. 1 is a sideelevation of an end portion a similar ring 22 other p Of an adjoining of a flexible hose embodying one form of the in-. fitting to hold he h e 1 in n ment h m 70 vention, a portion of the hose with its coupling With. When the adjoining member s a other member beingbroke'n away and a portion theresection similar hose a rigid g, the ad-. of shown in section. jacent ends may be similar in shape as shown Fig. 2 isa section taken on line 2 2 of Fig. 1. in e- 3 a the retaining rings 12 and 22 m y e Fig. 3 is a longitudinal section through a joint s m lar in construction. In such a case a sealing 7 between a section of hose and an adjoining cnsurface 20 y be Provided at the d o eac duit,'parts being broken away. section, the meeting surfaces being held in en- Fig. 4 is a iew similar to Fi 3 showing a gagement with each other under compression by modification of the invention. e bolts 21.

25 The invention in its broad aspect comprises en- Although it is preferred to maintain a uniform 90 larging or flaring the outer surface of the flexuninterrupted bore and to enclose the reinforcible hose near the end of a section thereof, utilihg ring W t n e Walls of the hose, e h 'izi th flared an a a bearing urface for a may be made with its bore increased adjacent the retaining member, providing a reinforcing supends and the ring seated in the enlarged portion port at the enlarged or flared portion to prevent of the bore as Shown in so as not to restrict collapse of the hoseunder the pressure of the reh hose but to Provide the desired Supporttaining member, and providing a Sealing face o Where two'such sections of conduit are to be the hose to engage an adjacent member. d, a ring 23 may be formed at ppo ends Referring to the drawing, and particularly t to bear against the inner flared walls of the two i 35 Figs. 1 and 2 thereof, the flexible hose, designate sections, t e flarin of the walls permitting the 90 d by th numeral 10, h t outer surface r use of a ring which does not restrict the bore ofv its wall enlarged or flared as at 11 to form a the hose at the seat for a non-expansible retaining ring 12'which Additional reinforcing rings 24 y be. 0 1- is provided with a seating surface.13 to conform porat d in t well-of e hose between the 40 therewith. Reduction of the size of the enlarged taming ring 12 a d the wig 3 to c e t 95 portion to' a substantial degree, or collapse or resistance of the hose compression adjace the hose wall at the coupling, is prevented by a the sealing surfeeeh ring 24 need not be non-compressible reinforcing rin 01' t l or collapsible but may be constructed of cord or other material designated by the numeral 14. fabri- The reinforcing ring is preferably incorporat- I claim: 100.

ed in the thickened wall of the hose where it is 1. The combination of a pair of flexible hose protected against corrosion. The hose may be sections having respective end sealing faces in of any ordinary construction and preferably comsealing engagement with each other, each of said prises a wall 19 of vulcanized rubber or other resections havingits outer surface flared adjacent silient material impervious to the fluid to .be its end sealing face to provide a seat for an axconducted. In the form shown in Figs. 1 and 2, ially-impelled retaining structure, a pair of rethe hose is reinforced by plies of textile material taining structures seated respectively on the 15, 16, some of which have their margins cuffed flared surfaces, means holding the retaining 5 about the reinforcing ring 14,- and also by a helical members against movement away from each i 55 reinforcement 17 of metal. other, and a rigid, non-contractible ring in the end of eachhose section providing apositi've and sealing engagement with the end sealing face unyielding clamping of material the hose bethereof, means holding the retaining structure tween the ring and the retaining structure. jagainst movement away tromthe container, and 2. A flexible hose having an end sealing iace a rigid, non-contractibie ring in the end portion I and adjacent thereto an outer surface flared outof the hose providing a positive and unyielding wardly toward the end sealing face, a retaining clamping of material of the hose between thering structure seated on the flared surface, a 'conand the retaining. structure.

tainer in communication with the'hose and in QEORGE K. BEDUR. I0

so its 

